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    <!-- 标准简单日期 -->
    <time datetime="2016-01-20">20 January 2016</time>
    <!-- 只包含年份和月份-->
    <time datetime="2016-01">January 2016</time>
    <!-- 只包含月份和日期 -->
    <time datetime="01-20">20 January</time>
    <!-- 只包含时间，小时和分钟数 -->
    <time datetime="19:30">19:30</time>
    <!-- 还可包含秒和毫秒 -->
    <time datetime="19:30:01.856">19:30:01.856</time>
    <!-- 日期和时间 -->
    <time datetime="2016-01-20T19:30">7.30pm, 20 January 2016</time>
    <!-- 含有时区偏移值的日期时间 -->
    <time datetime="2016-01-20T19:30+01:00">7.30pm, 20 January 2016 is 8.30pm in France</time>
    <!-- 调用特定的周 -->
    <time datetime="2016-W04">The fourth week of 2016</time>
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